I think the nearest possible application is of an rgb led and how it's able to generate a certain a color. Since i'm using a laser it will be a bit different but i think the conversion factor can be changed. I'll look into the construction of a laser.. how it's driven and find some papers that have attempted to control color of a laser.

Side note: Just figured out why the IR wavelength was showing in the green laser. turns out the pure green lasers are rare and what we get is an IR laser lasing at 1056nm there about. The frequency is then double within the structure which halves the wavelength so we get around 532nm there about green light.

The green laser is usually made of inGan material. but since my diode is an IR one not so sure what it's made of. Here's a proper true green laser. https://ams-osram.com/products/lasers/color-lasers-eel/osram-metal-can-to56-plt5-520b i found a good paper explaining the effects of PWM with this laser. i'll read it see if it will give me some insight into having proper pwm control with the laser.

Interesting facts gathered from this paper.

• the current and output power shows almost a linear trend with green laser. but no so much with blue laser.. when i'm looking into blue laser i'll have to keep that in mind.
• Higher temperature requires more current and outputs less power.
• Power and duty cycle graph shows best possible results with highest power, lowest current, temperature controlled at 10khz at 30C.

i'll collect each lasers wavelength using spectrometer for CIE coordinates gamut. i'll also measure each lasers optical power with change in voltage/pwm.

I've found that most instruments have usbtcm connection which will let us talk to the device and gather data programatically. i'll try to set that up because when the new lasers arrive i have to be able to get the data fast. even right now i have to measure, wavelength, voltage, current, pwm value, intensity and so on.. will be hard to get 1024 (10bit) data